Considering the various aspects of primitive paddy field such as environment,tools,irrigation installation and so on, the paper mainly demonstrates that irrigation works at the earliest originate from southern primitive paddy field area in the middle Neolithic Age.
本文从原始水田的自然环境、原始水田的耕作工具、原始水田遗址的灌排设施等方面,论证我国灌溉水利最早产生于新石器时代中期的南方水田区。
It is known that higher pressure water injection can make casing damage violence, and it is confirmed that initial formation pressure is reasonable water injection pressure that prevents from casing damage.
高压注水可以加剧套管损坏已越来越成为共识 ,并已初步确定了原始地层压力是预防套损的合理注水压力。
A Discussion on Chinese Irrigation Works Originated from Southern Primitive Paddy Field Area;
论中国灌溉水利起源于南方原始水田区
Identify original oil-water interface by 3D seismic attributes in Chunguang Oilfield
应用三维地震属性识别春光油田原始油水界面
Influential factors of primitive distribution of gas and water in loose sand gas reservoir.
涩北气田疏松砂岩气藏原始气水分布的影响因素
Thereinto,10.15% in paddy field,3.51% in plain,and 7.14% in sloping crop land.
其中,水田为10.15%,平原为3.51%,丘陵为7.14%。
Study on Environment Effect of the Level Terrace in Southern of Loess Plateau;
黄土高原南部水平梯田环境效应研究
The Study on Difference of Water and Fertilizer Effect of Dry-land Farming in Loess Plateau;
黄土高原旱作农田水肥效应差异研究
Scaling mechanism and prevention of water injection system in Mawangmiao Oilfield;
马王庙油田注水系统结垢原理与防护
The Scheme Design of Crude Oil Dehydration Power Supply in Automation Retrofit
油田原油电脱水自动化改造方案设计
Analysis of Soil Fertility and Fertility Betterment Measures for Paddy Field in Kaiyuan City
开原市水田土壤肥力分析及培肥措施
Study on Soil Field Capacity Estimation in the Loess Plateau Region
黄土高原地区土壤田间持水量的计算
Preliminary Analysis on Reason and Trend of Weed Community Evolution in Paddy Field
水稻田杂草群落演化原因及趋势浅析
Analysis on reason of water-production in the first mem- ber of Quantou group in Xiaohelong gas field
小合隆气田泉一段气层产水原因分析
Causation of water producing for Chang 8_1 low permeability reservoir in Block Zhuang 58 of Xifeng Oilfield
西峰油田庄58井区长8_1储层出水原因
No original image is required for watermarking extraction.
该算法在提取水印时不需要原始图像。
Evaluating the reliability of original data from wastewater treatment plants
污水处理厂原始数据可靠性评价方法
Quantitative evaluation of water-flooded zones by using raw resistivity inversion
利用原始电阻率反演定量评价水淹层
Slash and burn cultivation and the burning of grass to fertilize land were still customs retained in a few localities.
在少数地方，还保持着“刀耕火种”、“烧荒肥田”的原始耕作方式。
There they plant themselves squarely, cut themselves gardens from the fields, and take their ease.
它们就在平原上安顿下来，在田野上开辟花园，开始过舒适的日子。